<!doctype html> 
<html> 
<head> 
    <meta charset="utf-8"> 
    <title></title> 
    <style type="text/css">
*{margin: 0;padding: 0;}
#div{
	
	height: 300px;
	margin-left:5px;
	margin-right:5px;
	background: black; 
}
#div2{
	
	height: 200px;
	margin-left:10px;
	margin-right:10px;
	background: green; 
}

    </style>
</head>
<body>
<div id='div'></div>
<div id='div2'></div>
</body>
</html>